/Engine/Source/Runtime/Engine/Classes/EdGraph/EdGraphSchema.h
Checks if the node supports dropping a pin on it
Returns TRUE if there is support for dropping the pin on the node
virtual bool SupportsDropPinOnNode ( [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * InTargetNode, const [FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) & InSourcePinType, EEdGraphPinDirection InSourcePinDirection, [FText](API\Runtime\Core\Internationalization\FText) & OutErrorMessage ) const